#include <iostream>
#include <vector>
using namespace std;

vector<int> A, C;
int B;

vector<int> mul(vector<int> &A, int &B)
{
    vector<int> C;
    int t = 0;
    for (int i = 0; i < A.size(); ++i)
    {
        t += A[i] * B;
        C.push_back(t % 10);
        t /= 10;
    }
    while (t)
    {
        C.push_back(t % 10);
        t /= 10;
    }
    while (C.size() > 1 && C.back() == 0)
        C.pop_back();
    return C;
}

int main()
{
    ios::sync_with_stdio(false);
    string a;
    cin >> a >> B;
    for (int i = a.size() - 1; i >= 0; --i)
        A.push_back(a[i] - '0');
    C = mul(A, B);
    for (int i = C.size() - 1; i >= 0; --i)
        printf("%d", C[i]);
    return 0;
}